﻿public class Example4_10 {
    public static void main(String args[]) {
        Lader1.下底=100;
        Lader1 laderOne=new Lader1();
        Lader1 laderTwo=new Lader1();
        laderOne.设置上底(28);
        laderTwo.设置上底(66);
        System.out.println("laderOne的上底:"+laderOne.获取上底());
        System.out.println("laderOne的下底:"+laderOne.获取下底());
        System.out.println("laderTwo的上底:"+laderTwo.获取上底());
        System.out.println("laderTwo的下底:"+laderTwo.获取下底());
    }
}
